Pith Number

pith:RG6AYHA6

pith:2007:RG6AYHA6VVHLN6DC7A7LMRTWXH

not attested not anchored not stored refs pending

Strong MgII systems in quasar and gamma-ray burst spectra

Cristiano Porciani (ETH-Zurich), INAF-Trieste), Matteo Viel (IoA-Cambridge, Simon J. Lilly (ETH-Zurich)

arxiv:astro-ph/0701153 v1 · 2007-01-05 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RG6AYHA6VVHLN6DC7A7LMRTWXH}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T04:37:01.226046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89bc0c1c1ead4eb6f862f83eb64676b9f4e7300c129bbcfe1861fb492b95f5fb

Aliases

arxiv: astro-ph/0701153 · arxiv_version: astro-ph/0701153v1 · doi: 10.48550/arxiv.astro-ph/0701153 · pith_short_12: RG6AYHA6VVHL · pith_short_16: RG6AYHA6VVHLN6DC · pith_short_8: RG6AYHA6

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/RG6AYHA6VVHLN6DC7A7LMRTWXH \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 89bc0c1c1ead4eb6f862f83eb64676b9f4e7300c129bbcfe1861fb492b95f5fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2c0be2c6f758f0866c904b8a7a4588787bbbc95678a4505b9454f9a8685803c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-01-05T21:00:31Z",
    "title_canon_sha256": "5463d59d9bf485c7ec43803042a584916a3f00494aa62bba413c95ebecb27230"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0701153",
    "kind": "arxiv",
    "version": 1
  }
}